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To work out the circumference of a circle, you multiply the diameter by Pi (approximately 3.141).

Sources:

www.mathgoodies.com/calculators/circumference-calculator.html

Our

www.athropolis.com/popup/c-circ2.htm

A quick and easy

www.onlineconversion.com/circlesolve.htm

Solve area, diameter, and

math.about.com/library/blcirclecalculator.htm

The distance all around a circle is called the Circumference and is referred to in formulas as C. The distance from one side of the circle to the other is referred to as the Diameter of a circle and is identified as a d in formulas. The Radius of a circle is the distan... More »

www.calculatorsoup.com/calculators/geometry-plane/circle.php

Calculate the area,

www.free-online-calculator-use.com/circle-calculator.html

This free online geometry

www.csgnetwork.com/circumellipse.html

This

www.wikihow.com/Calculate-the-Circumference-of-a-Circle

www.rkm.com.au/CALCULATORS/CALCULATOR-circle-sphere.html

Calculate the volume, surface area,

Popular Q&A

Q:
Making a circumference calculator in PHP?

A:
1) What's the submit action in the form? 2) <input type="text" name="number">. 3) if(is_numeric($number) {. Submit was clicked, since the form was submitted. of...
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Source:
answers.yahoo.com

Q:
How to Calculate Circumference in Feet.

A:
The circumference of a circle equals the distance around the circle. To calculate the circumference of a circle in feet, you need to know either the radius or t...
Read More »

Source:
www.ehow.com

Q:
How to Calculate Circumference in Inches.

A:
1. Locate the circle's center, and measure the length from its center to a point on its edge to find the radius. For an example, suppose the measurement is 5 in...
Read More »

Source:
www.ehow.com

Q:
What is the formula for calculating circumference ?

A:
Circumference is the distance (length) around a circle. This is the answer to the equation you are trying to solve. The formula for circumference is pi x Diamet...
Read More »

Source:
www.chacha.com

Q:
How to Calculate the Circumference of a Circle.

A:
Three Methods: Circumference Help. Using the Diameter. Using the Radius. Whether you're doing craft work, putting fencing around your hot tub, or just solving a...
Read More »

Source:
www.wikihow.com